Screen Lock locks all but one screen

[qio]

Lubuntu 20.04
xscreensaver 5.42+dfsg1-1ubuntu1

What I expected to happen:

Upon engaging "Lock Screen", all three of my monitors display the screensaver or nothing if the screensaver is disabled.

What happened instead:

Two of my monitors lock, while one (the same one every time) remains unchanged, its contents still visible. It cannot be interacted with since the cursor remains bound to the login window of the locked monitor next to it. See attached pic.

What I did to get around it:

Using [this](https://askubuntu.com/a/1161114) answer, I disabled `xscreensaver` from startup and installed and enabled `xautolock -locker "xtrlock -b"` on startup. With this, all my screens lock when activating "Lock Screen" (although the numpad input support of this new locker leaves something to be desired). : p

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xscreensaver 5.42+dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 5.8.0-43.49~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-43-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Thu Feb 18 01:10:23 2021
InstallationDate: Installed on 2021-02-18 (0 days ago)
InstallationMedia: Lubuntu 20.04.2 LTS "Focal Fossa" - Release amd64 (20210204)
SourcePackage: xscreensaver
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. Since the package referred to in this bug is in universe or multiverse, it is community maintained. If you are able, I suggest coordinating with upstream and posting a debdiff for this issue. When a debdiff is available, members of the security team will review it and publish the package. See the following link for more information: https://wiki.ubuntu.com/SecurityTeam/UpdateProcedures

[qio (qio)]

Thanks, Seth.

As a note, it might be related to: https://bugs.launchpad.net/ubuntu/+source/xscreensaver/+bug/1814490